Which ONE is the BEST NOZZLE SIZE?? (for Cura 5+ & PrusaSlicer 2.5+)

PRINT TIMES (Cali-Dragon): 0.4mm LW - 38 minutes 0.5mm LW - 33minutes 0.6mm LW - 30minutes 0.8mm LW - 27minutes PRINT TIMES (GJB Test Cube): 0.4mm LW - 27 minutes 0.5mm LW - 22minutes 0.6mm LW - 20minutes 0.8mm LW - 18minutes (All other settings are exactly the same)

Yeah, it seems that Thomas is mostly concerned with large functional prints. .6 is kind of mandatory for wood filament but I tried a couple ordinary prints with the new Cura and wasn't impressed. I suspect it has something to do with viscosity or surface tension in relation to the size of the hole but .6 is just sloppy.

Thank you for testing this. Even with other people going with the "0.6mm and arachne" combination being the best I always suspected that as long as you weren't hitting volumetric flow limitations, you are better using a 0.4mm and thicker width than a 0.6mm nozzle and trying to get arachne to print less than nozzle widths. Your tests seem to confirm this (though I didn't think about the overhangs, makes sense though). I'll keep going with my 0.4mm nozzle and 0.6-0.8mm line widths as I am still not maxing out the flow rate of my extruders quite yet.

The results are pretty similar overall. For fine details, obviously a finer nozzle is the winner. For functional prints and the larger they get, a wider nozzle is going to get you faster print times with little sacrifice. Good video!

Great video, I'll be sticking with my 0.4mm nozzle and 0.5mm line widths

Highly informative. You make a good case for IDEX printers. Use 0.4 for outermost perimeter and large nozzle for everything else.

Oh, wow, I just found your channel and it's amazing! Awesome information! Thanks!

so then the way to fine details and speed is just going like 0.2-0.4mm and crankin that volumetric flow + cooling?

Should i use a 0.5 nozzle to get instead of a 0.6? To get benefits from both worlds? not to big like the 0.6 and not to small like 0.4

Huh, I was sort of expecting bigger nozzles performing better with their 'native' line widths. Thank you for this analysis! I routinely print small detailed prints with 0.5mm line width (and 0.4mm nozzle), it's pleasantly faster and looks good. I guess my bigger nozzle will stay in the box waiting for more cloggy filament like marble/glitter.

It is very important to make videos on this so thank you. It seems like every couple of days over on r/fixmyprint that someone comes away with the idea that .6 or .8mm nozzles are their key to faster parts and they ruin their prints and often overrun their volumetric flowrate, or even more often overrun their part cooling capabilities resulting in weird hard to diagnose at a glance print artifacts. Every time I tell one of those people that most nozzles will print at least 1.2mm width lines without sacrificing print quality it always feels like the supprised Pikachu meme. Hopefully this helps undo some of the damage Thomas Sanladerer did with his Arachne video.

It's amazing 0.4mm turned out to be the perfect size, time and time again for all this time. I have a lot of larger nozzles, i keep buying them, but ... i never use them :O

Interesting. I've always thought that the bigger nozzle was the most obvious thing for faster prints. I usually print functional parts rather than aesthetic models. But from what you are saying, the 0.4mm nozzle can print just as fast as the 0.6mm for as long as you don't hit the volumetric limit. Is this correct ?

Increase volumetric flow by using a volcano nozzzle and 2 nuts thats it. The heater catride can keep up, the heatsink can keep up, you simply just need a longer nozzle.

I'm sorry but I can't see anything that might be a deal breaker for a 0.6 vs the classic 0.4. Where are those details you say that are so visible, and where exactly does the 0.4 "destroys" the 0.6 nozzle? :/ my screen is just an HD one, so maybe I need more resolution to appreciate when does the 0.6 fails? .-.

Yep even Prusa has shifted back to 0.4mm nozzles for their XL printers after the disaster that was the launch in big part due to the 0.6mm nozzle. Im sure they could've made it work on the 0.6mm but it seems like just using a 0.4mm fixed it

Have you forgotten to make the video about 0.3mm nozzle that you mentioned?

Amazing vid!

I've been testing 0.6 for a month or so, and went back to 0.4 because quality was just not there

I'm trying to get an 0.6 to speed up my process with ASA. I have achieved the strength and speed I'm looking for but there is one (4mm dia.) area that is is curved upwards at a mere 70 degrees and I get curling at the edge which leads to a clump of plastic along the edge but is fine elsewhere. I've tried many settings but what the 0.4 nozzle has no trouble with the 0.6 insists on curling in this area. Even at 0.15 Layer Height on the 0.6 nozzle I am getting curling. As I understand it the theory is that the ASA is shrinking and I've adjusted accordingly with all the popular settings. Preliminary results of my tests so far show I can take my 8 hour print down to 3, if only I can fix this problem. I've run the normal gambit of Temperature, Speed, Layer Height ect. so I am wondering if wall overlap and skin penetration and whatever else anyone can think of that might help.